SOHC not getting enough fuel?
01-26-2003, 11:16 AM
#1
Thread Starter
Join Date: Mar 2002
Location: JaCkSoNvIlLe, TX, USA
Posts: 2,431
Likes: 0
Received 0 Likes
on
0 Posts
SOHC not getting enough fuel?
Ok my friend just recently installed a used greddy kit on his 96 DX, Well he put a D16Y8 head on it and is running it with a p28 with a skunk2 jumper. We got it to run good no CEL's and it ran good for a few days. Now it is running extermly lean iunder boost. He has a Autometer A/F gauge and it reads lean and the car is just not running like it was. Before he was using his stock DX ecu and it was running decent with a couple of CEL's but not lean. BTW he is using his stock DX injectors. Any suggestions on why this could be? Thanks. 
He is only running 7 psi
[Modified by flat-blk-HB, 2:25 PM 1/26/2003]
He is only running 7 psi
[Modified by flat-blk-HB, 2:25 PM 1/26/2003]
01-26-2003, 06:05 PM
#6
Join Date: Aug 2002
Location: V8 Country, USA
Posts: 1,350
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (flat-blk-HB)
Stock Fuel pump and he is using a D16Y8 intake mani and TB. With his stock DX injectors.
no fmu? stock pump? how much boost?
you are stupid for not upgrading your fuel setup before you turboed.
01-26-2003, 06:08 PM
#7
Thread Starter
Join Date: Mar 2002
Location: JaCkSoNvIlLe, TX, USA
Posts: 2,431
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (CzanSOHC)
Wow buddy that is not nice. 
Yeah we rewired the IACV and we ran the VTEC to the plugs a4 and d6 on the jumper and grounded it too. He has a FMU or whatever that thing is little blue round deal. (i dont know about FI to tell you the truth.)
Yes the stock pump,7 psi.
[Modified by flat-blk-HB, 9:10 PM 1/26/2003]
Yeah we rewired the IACV and we ran the VTEC to the plugs a4 and d6 on the jumper and grounded it too. He has a FMU or whatever that thing is little blue round deal. (i dont know about FI to tell you the truth.)Yes the stock pump,7 psi.
[Modified by flat-blk-HB, 9:10 PM 1/26/2003]
Trending Topics
01-26-2003, 06:10 PM
#8
Join Date: Jun 2002
Location: PORN CAPITAL OF THE WORLD, Ca, usa
Posts: 3,599
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (CzanSOHC)
Viren from VS racing sells Walbro intank fuel pumps are great prices. the 190lph or the 255lph would be a great choice over stock. Do you have a FMU ?? the injectors on a stock DX is about 240cc if you can upgrage that to 310cc or so would be nice.
01-26-2003, 07:07 PM
#9
Thread Starter
Join Date: Mar 2002
Location: JaCkSoNvIlLe, TX, USA
Posts: 2,431
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (camp1320.com)
IS there any diff in the OBD2 integra fuel pump? Yes he has a FMU. What about integra injectors?(obd2)
01-26-2003, 07:45 PM
#10
Member
Join Date: Nov 2002
Location: Texas, US
Posts: 1,239
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (flat-blk-HB)
94-01 Integra pumps should fit 92-00 Civics. But I think they're the same so get an aftermarket one. I think your problem is your fuel pump cannot handle the fuel pressures of an FMU. Upgrade fuel system. If you want to run more boost, I suggest the afc hack.
01-26-2003, 07:54 PM
#11
Honda-Tech Member
Join Date: Nov 2002
Location: Botswana
Posts: 3,365
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (flat-blk-HB)
Yes he has a FMU.
EDIT: oops, i meant to say ". . . .the OEM fuel pump your friend is using."
[Modified by Daniel, 5:07 AM 1/27/2003]
01-26-2003, 08:52 PM
#13
Thread Starter
Join Date: Mar 2002
Location: JaCkSoNvIlLe, TX, USA
Posts: 2,431
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (Hatchblack)
Alright I will tell him all of this. 
I dont know the ratio on the FMU it is one that comes with a greddy kit I am guessing???
[Modified by flat-blk-HB, 11:53 PM 1/26/2003]
I dont know the ratio on the FMU it is one that comes with a greddy kit I am guessing???
[Modified by flat-blk-HB, 11:53 PM 1/26/2003]
01-26-2003, 09:58 PM
#14
Honda-Tech Member
Join Date: Mar 2001
Location: Ft. Worth, TX
Posts: 3,650
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (flat-blk-HB)
He should have a 10:1 with stock injectors, 12:1 to be on the safe side but if he's going to continue running an FMU he needs to get an inline high pressure fuel pump. The high pressure intank isn't up to the task. Any more than 7 psi of boost and he should REALLY, REALLY get bigger injectors and Hondata.
01-26-2003, 11:35 PM
#15
Join Date: Dec 2001
Location: Long Island, NY, USA
Posts: 2,047
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (Hatchblack)
which sohc greddy kit came with fmu? what happened to blue box? or maybe the previous owner replaced it i guess. just curious
01-27-2003, 12:25 AM
#16
Member
Join Date: Oct 2002
Location: phoenix, hawaii
Posts: 4,475
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (flat-blk-HB)
hows vtec engaging with stock ecu???just wondering..aftermarket vtec controller? why didnt he just buy a execu??i got one for sale 
01-27-2003, 04:27 AM
#17
Thread Starter
Join Date: Mar 2002
Location: JaCkSoNvIlLe, TX, USA
Posts: 2,431
Likes: 0
Received 0 Likes
on
0 Posts
Re: SOHC not getting enough fuel? (GOLDBERG)
Well he is not using a stock ECU..He is using a OBD1 P28, that is what is activating his vtec. But I will tell him he needs a better fuel pump. Well **** to tell you the trtuh i dont know what the hell it is but it looks like a round disk that was blue before but some body painted it black and has the gas lines ran to it then ran to the fuel rail via hose. Is that a fmu?
Thread
Thread Starter
Forum
Replies
Last Post
SOHC_MShue
Forced Induction
7
03-11-2003 09:31 AM
rjardy
Forced Induction
9
10-14-2002 08:15 AM